Ford Bearings

[T_BIRDLX]

It was detonating/pinging and I took it to the dealer and they said there was nothing wrong.It had this problem since June off and on. I asked them about when they said the bearings were spun and they said it would not effect the bearings and was probably due to the spun bearing. He also said he did not see any reason to check into it. I always put Havoline Synthetic 5w30 in it. Changed the oil every 4,000 miles.(should be able to 6,000 with no problem.) I always checked the oil every week and it was never low at any point.It had 66,000 miles on it when I got it so I dont know what the original owner did. It now has 81,000 on it and should have no reason for failing. Do you know of a way I can test the oil pump. The Ford dealership still has the car and says they will do nothing more. Not even pull the main bearings and look at them.They are willing to give me the pump and already given me the rod bearings. Easycare is stating improper oil usage but that can mean so many different things. My dad is a mechanic so I know how to take care of my car,but he has never dealt with a 4.6. The service manager at Sheehy said that they would have to remove the opil pump for me but it is my understanding in order for them to pull the engine out of the car they must pull the oil pump first is that not true.